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Hi would you please helping me on substituting IC L149, because as I already know it has not been produced any more.

Mpakr.1
Associate II

‎2020-06-14 08:27 AM

 
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Peter BENSCH
ST Employee

‎2020-06-16 06:59 AM

The L149 was a linear power driver with +-20V supply voltage and 4A driving capability, obsoleted long ago.

There is no replacement available from STMicroelectronics.

/Peter

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Mpakr.1
Associate II
In response to Peter BENSCH

‎2020-06-16 07:15 AM

thank you so much, but I have a problem, I have board that uses this kind of IC and its critical to replace it with something, my output driving is only 2A, I tried to replace TDA2030A and TDA2003 but non of them work, what is your suggestion?

I would appreciate if you can help me./.

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Peter BENSCH
ST Employee

‎2020-06-16 08:21 AM

Sorry, STMicroelectronics is not able to suggest any alternative.

But some hint: audio amplifiers are not optimized for DC operation, so it might be worth looking for a power op amp providing at least the parameters mentioned above or the current you are mentioning.

Good luck in finding the right part, I'm sure you will.

/Peter

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Mpakr.1
Associate II

‎2020-06-16 10:58 PM

thank you so much your suggestion helped me. I need it very much thanks./.

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